10 research outputs found
Haptics Rendering and Applications
There has been significant progress in haptic technologies but the incorporation of haptics into virtual environments is still in its infancy. A wide range of the new society's human activities including communication, education, art, entertainment, commerce and science would forever change if we learned how to capture, manipulate and reproduce haptic sensory stimuli that are nearly indistinguishable from reality. For the field to move forward, many commercial and technological barriers need to be overcome. By rendering how objects feel through haptic technology, we communicate information that might reflect a desire to speak a physically- based language that has never been explored before. Due to constant improvement in haptics technology and increasing levels of research into and development of haptics-related algorithms, protocols and devices, there is a belief that haptics technology has a promising future
Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021
This Open Access proceedings presents a good overview of the current research landscape of assembly, handling and industrial robotics. The objective of MHI Colloquium is the successful networking at both academic and management level. Thereby, the colloquium focuses an academic exchange at a high level in order to distribute the obtained research results, to determine synergy effects and trends, to connect the actors in person and in conclusion, to strengthen the research field as well as the MHI community. In addition, there is the possibility to become acquatined with the organizing institute. Primary audience is formed by members of the scientific society for assembly, handling and industrial robotics (WGMHI)
Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021
This Open Access proceedings presents a good overview of the current research landscape of assembly, handling and industrial robotics.
The objective of MHI Colloquium is the successful networking at both academic and management level. Thereby, the colloquium focuses an academic exchange at a high level in order to distribute the obtained research results, to determine synergy effects and trends, to connect the actors in person and in conclusion, to strengthen the research field as well as the MHI community. In addition, there is the possibility to become acquatined with the organizing institute. Primary audience is formed by members of the scientific society for assembly, handling and industrial robotics (WGMHI)
Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2021
This Open Access proceedings presents a good overview of the current research landscape of assembly, handling and industrial robotics. The objective of MHI Colloquium is the successful networking at both academic and management level. Thereby, the colloquium focuses an academic exchange at a high level in order to distribute the obtained research results, to determine synergy effects and trends, to connect the actors in person and in conclusion, to strengthen the research field as well as the MHI community. In addition, there is the possibility to become acquatined with the organizing institute. Primary audience is formed by members of the scientific society for assembly, handling and industrial robotics (WGMHI)
Game Fiction
“Game Fiction” provides a framework for understanding the relationship between narrative and computer games and is defined as a genre of game that draws upon and uses narrative strategies to create, maintain, and lead a user through a fictional environment. Competitive, ergodic, progressive (and often episodic), game fictions’ primary goal must include the actualization of predetermined events. Building on existing game and new media scholarship and drawing from theories of narrative, cinema, and literature, my project details the formal materiality that undergirds game fiction and shapes its themes. In doing so, I challenge the critiques of narrativism levied at those scholars who see a relationship between computer games and narrative forms, while also detailing the ways that computational media alter and reform narratological preconceptions. My study proposes a methodology for discussing game fiction through a series of ‘close playings,’ and while not intended to be chronological or comprehensive, provides a model for understanding narrative and genre in this growing field
Tabletop tangible maps and diagrams for visually impaired users
En dépit de leur omniprésence et de leur rôle essentiel dans nos vies professionnelles et personnelles, les représentations
graphiques, qu'elles soient numériques ou sur papier, ne sont pas accessibles aux personnes déficientes visuelles car elles
ne fournissent pas d'informations tactiles. Par ailleurs, les inégalités d'accès à ces représentations ne cessent de
s'accroître ; grâce au développement de représentations graphiques dynamiques et disponibles en ligne, les personnes voyantes
peuvent non seulement accéder à de grandes quantités de données, mais aussi interagir avec ces données par le biais de
fonctionnalités avancées (changement d'échelle, sélection des données à afficher, etc.). En revanche, pour les personnes
déficientes visuelles, les techniques actuellement utilisées pour rendre accessibles les cartes et les diagrammes nécessitent
l'intervention de spécialistes et ne permettent pas la création de représentations interactives.
Cependant, les récentes avancées dans le domaine de l'adaptation automatique de contenus laissent entrevoir, dans les
prochaines années, une augmentation de la quantité de contenus adaptés. Cette augmentation doit aller de pair avec le
développement de dispositifs utilisables et abordables en mesure de supporter l'affichage de représentations interactives et
rapidement modifiables, tout en étant accessibles aux personnes déficientes visuelles. Certains prototypes de recherche
s'appuient sur une représentation numérique seulement : ils peuvent être instantanément modifiés mais ne fournissent que très
peu de retour tactile, ce qui rend leur exploration complexe d'un point de vue cognitif et impose de fortes contraintes sur
le contenu. D'autres prototypes s'appuient sur une représentation numérique et physique : bien qu'ils puissent être explorés
tactilement, ce qui est un réel avantage, ils nécessitent un support tactile qui empêche toute modification rapide. Quant aux
dispositifs similaires à des tablettes Braille, mais avec des milliers de picots, leur coût est prohibitif.
L'objectif de cette thèse est de pallier les limitations de ces approches en étudiant comment développer des cartes et
diagrammes interactifs physiques, modifiables et abordables. Pour cela, nous nous appuyons sur un type d'interface qui a
rarement été étudié pour des utilisateurs déficients visuels : les interfaces tangibles, et plus particulièrement les
interfaces tangibles sur table. Dans ces interfaces, des objets physiques représentent des informations numériques et peuvent
être manipulés par l'utilisateur pour interagir avec le système, ou par le système lui-même pour refléter un changement du
modèle numérique - on parle alors d'interfaces tangibles sur tables animées, ou actuated. Grâce à la conception, au
développement et à l'évaluation de trois interfaces tangibles sur table (les Tangible Reels, la Tangible Box et BotMap), nous
proposons un ensemble de solutions techniques répondant aux spécificités des interfaces tangibles pour des personnes
déficientes visuelles, ainsi que de nouvelles techniques d'interaction non-visuelles, notamment pour la reconstruction d'une
carte ou d'un diagramme et l'exploration de cartes de type " Pan & Zoom ". D'un point de vue théorique, nous proposons aussi
une nouvelle classification pour les dispositifs interactifs accessibles.Despite their omnipresence and essential role in our everyday lives, online and printed graphical representations are
inaccessible to visually impaired people because they cannot be explored using the sense of touch. The gap between sighted
and visually impaired people's access to graphical representations is constantly growing due to the increasing development
and availability of online and dynamic representations that not only give sighted people the opportunity to access large
amounts of data, but also to interact with them using advanced functionalities such as panning, zooming and filtering. In
contrast, the techniques currently used to make maps and diagrams accessible to visually impaired people require the
intervention of tactile graphics specialists and result in non-interactive tactile representations.
However, based on recent advances in the automatic production of content, we can expect in the coming years a growth in the
availability of adapted content, which must go hand-in-hand with the development of affordable and usable devices. In
particular, these devices should make full use of visually impaired users' perceptual capacities and support the display of
interactive and updatable representations. A number of research prototypes have already been developed. Some rely on digital
representation only, and although they have the great advantage of being instantly updatable, they provide very limited
tactile feedback, which makes their exploration cognitively demanding and imposes heavy restrictions on content. On the other
hand, most prototypes that rely on digital and physical representations allow for a two-handed exploration that is both
natural and efficient at retrieving and encoding spatial information, but they are physically limited by the use of a tactile
overlay, making them impossible to update. Other alternatives are either extremely expensive (e.g. braille tablets) or offer
a slow and limited way to update the representation (e.g. maps that are 3D-printed based on users' inputs).
In this thesis, we propose to bridge the gap between these two approaches by investigating how to develop physical
interactive maps and diagrams that support two-handed exploration, while at the same time being updatable and affordable. To
do so, we build on previous research on Tangible User Interfaces (TUI) and particularly on (actuated) tabletop TUIs, two
fields of research that have surprisingly received very little interest concerning visually impaired users. Based on the
design, implementation and evaluation of three tabletop TUIs (the Tangible Reels, the Tangible Box and BotMap), we propose
innovative non-visual interaction techniques and technical solutions that will hopefully serve as a basis for the design of
future TUIs for visually impaired users, and encourage their development and use. We investigate how tangible maps and
diagrams can support various tasks, ranging from the (re)construction of diagrams to the exploration of maps by panning and
zooming. From a theoretical perspective we contribute to the research on accessible graphical representations by highlighting
how research on maps can feed research on diagrams and vice-versa. We also propose a classification and comparison of
existing prototypes to deliver a structured overview of current research
Application-driven visual computing towards industry 4.0 2018
245 p.La Tesis recoge contribuciones en tres campos: 1. Agentes Virtuales Interactivos: autónomos, modulares, escalables, ubicuos y atractivos para el usuario. Estos IVA pueden interactuar con los usuarios de manera natural.2. Entornos de RV/RA Inmersivos: RV en la planificación de la producción, el diseño de producto, la simulación de procesos, pruebas y verificación. El Operario Virtual muestra cómo la RV y los Co-bots pueden trabajar en un entorno seguro. En el Operario Aumentado la RA muestra información relevante al trabajador de una manera no intrusiva. 3. Gestión Interactiva de Modelos 3D: gestión online y visualización de modelos CAD multimedia, mediante conversión automática de modelos CAD a la Web. La tecnología Web3D permite la visualización e interacción de estos modelos en dispositivos móviles de baja potencia.Además, estas contribuciones han permitido analizar los desafíos presentados por Industry 4.0. La tesis ha contribuido a proporcionar una prueba de concepto para algunos de esos desafíos: en factores humanos, simulación, visualización e integración de modelos
Classificação de pacientes para adaptação de cadeira de rodas inteligente
Doutoramento em Engenharia InformáticaA importância e preocupação dedicadas à autonomia e independência das
pessoas idosas e dos pacientes que sofrem de algum tipo de deficiência tem
vindo a aumentar significativamente ao longo das últimas décadas. As
cadeiras de rodas inteligentes (CRI) são tecnologias que podem ajudar este
tipo de população a aumentar a sua autonomia, sendo atualmente uma área
de investigação bastante ativa. Contudo, a adaptação das CRIs a pacientes
específicos e a realização de experiências com utilizadores reais são assuntos
de estudo ainda muito pouco aprofundados.
A cadeira de rodas inteligente, desenvolvida no âmbito do Projeto IntellWheels,
é controlada a alto nível utilizando uma interface multimodal flexível,
recorrendo a comandos de voz, expressões faciais, movimentos de cabeça e
através de joystick. Este trabalho teve como finalidade a adaptação automática
da CRI atendendo às características dos potenciais utilizadores.
Foi desenvolvida uma metodologia capaz de criar um modelo do utilizador. A
investigação foi baseada num sistema de recolha de dados que permite obter
e armazenar dados de voz, expressões faciais, movimentos de cabeça e do
corpo dos pacientes. A utilização da CRI pode ser efetuada em diferentes
situações em ambiente real e simulado e um jogo sério foi desenvolvido
permitindo especificar um conjunto de tarefas a ser realizado pelos
utilizadores. Os dados foram analisados recorrendo a métodos de extração de
conhecimento, de modo a obter o modelo dos utilizadores. Usando os
resultados obtidos pelo sistema de classificação, foi criada uma metodologia
que permite selecionar a melhor interface e linguagem de comando da cadeira
para cada utilizador.
A avaliação para validação da abordagem foi realizada no âmbito do Projeto
FCT/RIPD/ADA/109636/2009 - "IntellWheels - Intelligent Wheelchair with
Flexible Multimodal Interface". As experiências envolveram um vasto conjunto
de indivíduos que sofrem de diversos níveis de deficiência, em estreita
colaboração com a Escola Superior de Tecnologia de Saúde do Porto e a
Associação do Porto de Paralisia Cerebral. Os dados recolhidos através das
experiências de navegação na CRI foram acompanhados por questionários
preenchidos pelos utilizadores. Estes dados foram analisados estatisticamente,
a fim de provar a eficácia e usabilidade na adequação da interface da CRI ao
utilizador. Os resultados mostraram, em ambiente simulado, um valor de
usabilidade do sistema de 67, baseado na opinião de uma amostra de
pacientes que apresentam os graus IV e V (os mais severos) de Paralisia
Cerebral. Foi também demonstrado estatisticamente que a interface atribuída
automaticamente pela ferramenta tem uma avaliação superior à sugerida pelos
técnicos de Terapia Ocupacional, mostrando a possibilidade de atribuir
automaticamente uma linguagem de comando adaptada a cada utilizador.
Experiências realizadas com distintos modos de controlo revelaram a
preferência dos utilizadores por um controlo compartilhado com um nível de
ajuda associado ao nível de constrangimento do paciente. Em conclusão, este
trabalho demonstra que é possível adaptar automaticamente uma CRI ao
utilizador com claros benefícios a nível de usabilidade e segurança.The importance and concern given to the autonomy and independence of
elderly people and patients suffering from some kind of disability has been
growing significantly in the last few decades. Intelligent wheelchairs (IW) are
technologies that can increase the autonomy and independence of this kind of
population and are nowadays a very active research area. However, the
adaptations to users’ specificities and experiments with real users are topics
that lack deeper studies.
The intelligent wheelchair, developed in the context of the IntellWheels project,
is controlled at a high-level through a flexible multimodal interface, using voice
commands, facial expressions, head movements and joystick as its main input
modalities. This work intended to develop a system enabling the automatic
adaptation, to the user characteristics, of the previously developed intelligent
wheelchair.
A methodology was created enabling the creation of a user model. The
research was based on the development of a data gathering system, enabling
the collection and storage of data from voice commands, facial expressions,
head and body movements from several patients with distinct disabilities such
as Cerebral Palsy. The wheelchair can be used in different situations in real
and simulated environments and a serious game was developed where
different tasks may be performed by users.
Data was analysed using knowledge discovery methods in order to create an
automatic patient classification system. Based on the classification system, a
methodology was developed enabling to select the best wheelchair interface
and command language for each patient.
Evaluation was performed in the context of Project FCT/RIPD/ADA/109636/
2009 – “IntellWheels – Intelligent Wheelchair with Flexible Multimodal
Interface”. Experiments were conducted, using a large set of patients suffering
from severe physical constraints in close collaboration with Escola Superior de
Tecnologia de Saúde do Porto and Associação do Porto de Paralisia Cerebral.
The experiments using the intelligent wheelchair were followed by user
questionnaires. The results were statistically analysed in order to prove the
effectiveness and usability of the adaptation of the Intelligent Wheelchair
multimodal interface to the user characteristics. The results obtained in a
simulated environment showed a 67 score on the system usability scale based
in the opinion of a sample of cerebral palsy patients with the most severe cases
IV and V of the Gross Motor Function Scale. It was also statistically
demonstrated that the data analysis system advised the use of an adapted
interface with higher evaluation than the one suggested by the occupational
therapists, showing the usefulness of defining a command language adapted to
each user. Experiments conducted with distinct control modes revealed the
users' preference for a shared control with an aid level taking into account the
level of constraint of the patient. In conclusion, this work demonstrates that it is
possible to adapt an intelligent wheelchair to the user with clear usability and
safety benefits
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